The Bluetooth sports headband adopts Jianrong Bluetooth 3.0 program module, fast link, the sound quality of the headset is clear, delicate, and the bass effect is obvious. In the off state, press and hold for 3 seconds to turn on; in the on state, press and hold for 3 seconds to turn off and turn on automatically. If the device is connected to a Bluetooth handheld device for the first time, it will enter the self-pairing mode immediately. After pairing with the Bluetooth device of the handheld device, it can be executed when playing audio. Short press "Pause" and short press "Play". While in a call, short-press "Answer incoming call", long-press "Reject incoming call", and quickly double-click "Dial recent call". Right button Play audio Short press "Next song", long press "Volume up". Left button): Play audio short press "previous song", long press "lower volume Bluetooth hat built-in high-performance polymer 110MAH battery, the PCB board has charging protection for the battery, you can work while charging. (Red when charging The light will be on, and the red light will go out after fully charged)